Nothing else of interest on the video, a bit of corporate history, e-ink tech explanation, lack of content.. the usual.
However, reading between the lines and taking into account the mentioned product development cycle (2 years), I think we should expect them to introduce a professional product line, ie: a significantly larger screen (maybe 12 inches probably still B/W) with handwriting/touch screen.
Trying to emulate Amazon's whispernet it's out of the question since they don't have the leverage and, hopefully, 2 years from now amazon will have lauched a kindle revision in the EU. At least in the UK. (pressed by Sony's reader)
For wireless allways-on they'd have to go with 3G, and the only carriers with enough coverage are O2 and Vodafone.
But anyway IMHO their projected PDC it's way too slow.
(unless of course we already are one year into their PDC and they release it next year)
Anyway when color 12" eink hits mainstream prices (hopefully 4 years from now) we'll see a content explosion, since mag publishing it's a bigger business.
But I'm looking forward to their professional product line.